The \(B \rightarrow K^* \ell ^+ \ell ^-\)  observables suffer from hadronic uncertainties which is mainly due to form-factors [1]}, [2]}, [3]} and non-local contributions associated with charm-quark loops [4]}, [1]}, [6]}, [7]}, [8]}, [9]}, [10]}. The form-factors in the low-\(q^2\)  region are calculated using light-cone sum rules (LCSR) or light-meson distribution
amplitudes whereas in the high-\(q^2\)  region, form-factors are obtained from lattice computations [11]}, [12]}.
